Washing machine and control method

ABSTRACT

A washing machine and a control method are provided. The washing machine includes an inner tub for accommodating water, a water collection structure for collecting water drained from the inner tub and a drainage control apparatus communicating with the water collection structure. The drainage control apparatus controls drainage according to a water level in the water collection structure. A detection apparatus is arranged to detect the water level in the water collection structure, and transmit a detection result to a main control apparatus to realize real-time monitoring. Through the arrangement of a drainage apparatus for draining the water in the water collection structure, the drainage apparatus is electrically connected with the main control apparatus, and the main control apparatus controls the drainage apparatus to drain or not to drain the water in the water collection structure according to the detection result of the detection apparatus.

TECHNICAL FIELD

The present disclosure relates to the field of washing machines, and more particularly relates to a washing machine and a control method.

BACKGROUND

A washing machine is designed as an apparatus driven by electricity to wash clothes. Generally, the washing machine includes: a tub for accommodating washing water; a rotating tub, rotatably mounted inside the tub; and a pulsator, rotatably mounted at the bottom of the rotating tub; and a motor and a clutch, configured to drive the rotating tub and the pulsator to rotate. When the rotating tub and the pulsator rotate in a state that the clothes and a detergent are introduced into the rotating tub, the pulsator agitates the washing water together with the clothes introduced into the rotating tub, thereby removing stains from the clothes.

In order to increase the washing capacity of the washing machine, a larger rotating tub is needed, that is, the height or diameter of the rotating tub needs to be increased. If the rotating tub has a larger size, the tub that accommodates the rotating tub and a housing that accommodates the tub also need to be enlarged as the size of the rotating tub increases.

The increase of the housing corresponding to the appearance of the washing machine is limited by space where the washing machine is installed. The position for placing the washing machine in a general user house is limited, and the purpose of increasing the capacity of the washing tub by increasing the size of the housing is not realistic, so that how to increase the capacity of the rotating tub without increasing the size of the housing of the washing machine has become a big problem that bothers the designers.

In order to increase the capacity of an inner tub, a water collection structure is arranged below the inner tub to collect water drained from the inner tub. Due to the influence of the size of the washing machine, the space below the inner tub is limited, which results in a limited volume of the water collection structure. If the drainage design is not good, it will often cause overflow, damage the electrical components in the lower part of the washing machine or cause the floor to slip. Therefore, how to design the drainage of the water collection structure on the premise of increasing the capacity of the inner tub is a huge problem at present.

In view of this, the present disclosure is provided.

SUMMARY

The technical problems to be solved by the present disclosure are to provide a washing machine and a control method to overcome the shortcomings in the prior art. A water collection structure arranged may prevent overflow of water drained from an inner tub and reduce the limitation of the water collection structure to the volume of the inner tub, so as to achieve a good volume enlargement effect. A detection device is arranged to detect the water level in the water collection structure, and transmit a detection result to a main control apparatus to realize real-time monitoring. A drainage apparatus for draining water in the water collection structure is arranged, and is electrically connected with the main control apparatus. The main control apparatus controls the drainage apparatus to drain or not to drain the water in the water collection structure according to the detection result of the detection apparatus.

To solve the above-mentioned technical problems, the basic conception of the technical solution of the present disclosure is that:

a washing machine, including an inner tub, the inner tub is a water accommodating tub; the washing machine further comprises a water collection structure for collecting water drained from the inner tub and a drainage control apparatus communicating with the water collection structure. The drainage control apparatus controls drainage according to a water level in the water collection structure.

The drainage control apparatus includes a main control apparatus, a detection apparatus for detecting the water level in the water collection structure, and a drainage apparatus for draining the water in the water collection structure. The water collection structure is located below a tub bottom of the inner tub, and the detection apparatus and the drainage apparatus are both electrically connected with the main control apparatus.

The water collection structure includes a water collection cavity having an upper opening. An upper end of a side wall of the water collection cavity is lower than the tub bottom of the inner tub. The inner tub is communicated with the upper opening of the water collection cavity. The detection apparatus is arranged in the water collection cavity.

The water collection structure includes a mounting plate and a water retaining bar arranged on the mounting plate. The mounting plate and the water retaining bar form the water collection cavity. The detection apparatus is arranged on an upper side of the mounting plate.

Preferably, the detection apparatus is detachably connected with the mounting plate.

The drainage apparatus includes a drainage pipe communicating with the water collection structure. A control structure for controlling the drainage pipe to be connected/disconnected is arranged on the drainage pipe. The control structure is communicated with the drainage pipe, and is electrically connected with the main control apparatus. The main control apparatus controls the control structure to be turned on/off according to the water level in the water collection structure detected by the detection apparatus.

The control structure is an electromagnetic valve electrically connected with the main control apparatus. The main control apparatus controls the electromagnetic valve to be turned on/off according to the water level in the water collection structure detected by the detection apparatus for allowing the drainage pipe to be connected/disconnected.

The control structure is a drainage pump communicating with the drainage pipe. The drainage pump is electrically connected with the main control apparatus. The main control apparatus controls the drainage pump to be turned on/off according to the water level in the water collection structure detected by the detection apparatus for allowing the water in the water collection structure to be discharged or not be discharged.

The detection apparatus is a water level sensor or a pressure sensor arranged in the water collection structure.

A control method of the above washing machine is provided, including:

presetting a water level height H1 in a main control apparatus;

a detection apparatus detecting a water level height H2 in the water collection structure, and transmitting a detection signal to the main control apparatus;

the main control apparatus determining whether H2 is greater than H1; if H2 is greater than H1, the main control apparatus controlling a drainage apparatus to be opening to drain water in the water collection structure; and if H2 is not greater than H1, the main control apparatus controlling the drainage apparatus to be in closed state.

The drainage control apparatus includes a drainage pipe communicating with a water collection apparatus. A float adjusting valve is arranged in the water collection structure or the drainage pipe. When a water level in the water collection structure reaches a certain height, the float adjusting valve is open, and the water in the water collection structure is drained out of the washing machine through the drainage pipe.

Compared with the prior art, the present disclosure has the following beneficial effects by using the above technical solutions: (1) the water collection structure arranged may prevent overflow of the water drained from the inner tub and reduce the limitation of the water collection structure to the volume of the inner tub, so as to achieve a good volume enlargement effect; (2) the detection device is arranged to detect the water level in the water collection structure, and transmit the detection result to the main control apparatus to realize real-time monitoring; and (3) the drainage apparatus for draining water in the water collection structure is arranged, and is electrically connected with the main control apparatus; the main control apparatus controls the drainage apparatus to drain or not to drain the water in the water collection structure according to the detection result of the detection apparatus.

The specific implementations of the present disclosure are further described below in detail in combination with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings constitute one part of the present disclosure, and are used to provide a further understanding of the present disclosure. Illustrative embodiments and descriptions thereof of the present disclosure are used to explain the present disclosure, and do not constitute an improper limitation to the present disclosure. Obviously, the drawings described below are only some embodiments, and those skilled in the art can obtain other drawings according to these drawings without any creative work. In the drawings:

FIG. 1 is a structural schematic diagram of a top view of a washing machine of the present disclosure;

FIG. 2 is a cross-sectional structural schematic diagram in a direction A-A of the washing machine of the present disclosure in FIG. 1;

FIG. 3 is a cross-sectional structural schematic diagram in a direction A-A of a washing machine of another structure of the present disclosure; and

FIG. 4 is a schematic diagram of a control method of a washing machine of the present disclosure.

In the drawings: 100: case body; 200: inner tub; 201: first drainage port; 202: first drainage pipeline; 203: water outlet; 204: second drainage port; 205: blocking apparatus; 205-1: valve plug; 205-2: electromagnetic apparatus; 206: clothes washing tub; 300: driving apparatus; 301: motor; 302: decelerating clutch apparatus; 303: output shaft; 400: water collection cavity; 401: drainage pipe; 500: mounting plate; 501: water retaining bar; 600: suspended vibration absorption member; 601: vibration absorption unit; 602: suspender; 700: mounting piece; 700-1: big mounting plate; 700-2: small mounting plate; 701: mounting portion; 703: first vibration absorption member; 704: second vibration absorption member; 800: main control apparatus; 801: detection apparatus; and 802: control structure.

It should be noted that these drawings and text descriptions are not intended to limit the conception scope of the present disclosure in any form, but are to describe the concept of the present disclosure to those skilled in the art with reference to specific embodiments.

DETAILED DESCRIPTION

In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments will be described clearly and completely below in combination with the drawings in the embodiments of the present disclosure. The following embodiments are used to describe the present disclosure, but not intended to limit the scope of the present disclosure.

Embodiment I

As shown in FIGS. 1 to 3, a washing machine, not provided with an outer tub, includes an inner tub 200, which is a water accommodating tub, and further includes a water collection structure for collecting water drained from the inner tub 200 and a drainage control apparatus communicating with the water collection structure. The drainage control apparatus controls drainage according to the water level in the water collection structure.

Through the arrangement of the water collection structure, on one hand, water is retained by the water collection structure when drained from the inner tub 200, so as to prevent water overflow, and on the other hand, the water collection structure is integrally located below the inner tub 200, so that the water collection structure does not have a partial structure located between the side wall of the inner tub 200 and the case body 100, and has no restriction effect on volume enlargement of the inner tub 200, thereby providing sufficient space for the volume enlargement of the inner tub 200. Through the arrangement of the drainage control apparatus, when there is too much water in the water collection structure, the water is drained through the drainage control apparatus to effectively prevent overflow caused by extremely high water level in the water collection structure.

The drainage control apparatus includes a main control apparatus 800, a detection apparatus 801 for detecting the liquid level in the water collection structure, and a drainage apparatus for draining the water in the water collection structure. The water collection structure is integrally located below the tub bottom of the inner tub 200, and the detection apparatus 801 and the drainage apparatus are both electrically connected with the main control apparatus 800. The detection apparatus 801 detects the water level in the water collection structure and transmits a detection result to the main control apparatus 800. The main control apparatus 800 controls the drainage apparatus to drain water according to the water level detected by the detection apparatus.

The washing machine generally further includes a case body 100 and a driving apparatus for driving the inner tub 200 to rotate. The inner tub 200 is arranged in the case body 100. The main control apparatus 800 is generally arranged in the case body 100, and is fixedly connected with the case body 100.

Further, the water collection structure includes a water collection cavity 400 having an upper opening. The upper end of the side wall of the water collection cavity 400 is lower than the tub bottom of the inner tub 200. The inner tub 200 communicates with the upper opening of the water collection cavity 400. The detection apparatus 801 is arranged in the water collection cavity 400.

Through the arrangement of the water collection cavity 400, the water drained from the inner tub 200 may be retained. Since the upper end of the side wall of the water collection cavity 400 is lower than the tub bottom of the inner tub 200, the water collection cavity 400 is integrally located below the tub bottom of the inner tub 200. Furthermore, the side wall of the water collection cavity 400 does not have a structure located between the inner tub 200 and the case body 100, so that there is no need to set a certain safety distance between the inner tub 200 and the water collection structure, and then damage caused by collision between the inner tub 200 and the water collection structure is prevented. Meanwhile, there is no need to set a safety distance between the water collection structure and the case body 100, either, but only a safety distance between the inner tub 200 and the case body 100 is set, so that the tub diameter of the inner tub 200 may be greatly increased, and the volume enlargement of the inner tub 200 is better realized.

A second drainage port 204 is formed in the lower part of the inner tub 200 to drain the water in the inner tub 200 into the water collection structure. The washing machine includes a blocking apparatus 205 for blocking the second drainage port 204. In water feeding and washing states, the blocking apparatus 205 blocks the second drainage port 204, so that the inner tub 200 accommodates water for clothes washing; and during drainage and dewatering, the blocking apparatus 205 is opened to drain the water into the water collection cavity 400 of the water collection structure. During water feeding, if a water level control component such as a flow meter is faulted, the water will flow into the water collection cavity 400 below through the top of a balance ring along the wall of the inner tub 200, and then may overflow from the water collection cavity 400 due to ceaseless water feeding. Or, during dewatering and drainage, the washing water in the inner tub 200 enters the water collection cavity 400 from the inner tub 200, and if there is too much liquid, it will overflow from the water collection cavity 400. Or, during clothes washing, when the blocking apparatus 205 between the inner tub 200 and the water collection cavity 400 is damaged, the washing water enters the water collection cavity 400 from the inner tub 200, which causes ceaseless water feeding and then causes the water to overflow from the water collection cavity 400. The above three situations will all cause the water to overflow to the ground and make a wet floor, or cause the water to overflow to electric parts at the bottom of the washing machine and damage the electric parts.

The detection apparatus 801 is arranged to detect the water level in the water collection structure, and transmit the detection result to the main control apparatus 800, so as to monitor the water level in the water collection structure in real time. The main control apparatus 800 controls a linkage structure to work, or displays or outputs the detection result, or sounds an alarm.

The detection apparatus 801 is arranged in the water collection cavity 400 to monitor the water level in the water collection cavity 400 in real time.

Further, the water collection structure includes a mounting plate 500 and a water retaining bar 501 arranged on the mounting plate 500. The mounting plate 500 and the water retaining bar 501 form the water collection cavity 400. The detection apparatus 801 is arranged on the upper side of the mounting plate 500, and is located in the water collection cavity 400. The detection apparatus 801 arranged on the upper side of the mounting plate 500 may detect the water level in the water collection structure conveniently.

The water retaining bar 501 and the mounting plate 500 may be integrated, and may also be in other fixing manners, such as adhesion.

Further, the detection apparatus 801 is detachably connected with the mounting plate 500. The detection apparatus 801 may be connected with the mounting plate 500 in a clamping manner, a threaded manner, or other detachable connection manners, which is favorable for replacement and maintenance of the detection apparatus 801.

Through the arrangement of the drainage structure, the drainage apparatus and the detection apparatus 801 are both electrically connected with the main control apparatus 800. The main control apparatus 800 controls the drainage apparatus to open or controls the opening degree of the drainage apparatus according to the water level height, detected by the detection apparatus 801, in the water collection structure. When the water level in the water collection structure is relatively high, the drainage apparatus is opened or the opening degree of the drainage apparatus is increased, to realize fast drainage. When the water level returns to a lower position or there is no water, the drainage apparatus is closed or the opening degree of the drainage apparatus is decreased, to stop drainage or reduce the drainage volume.

The drainage apparatus may be an independent apparatus for drainage in case of a failure, and may also be a structural transformation of a drainage pipe of the original washing machine.

On the following circumstances, the drainage apparatus is opened.

During the water feeding, the second drainage port 204 is blocked by the blocking apparatus 205, so that basically no water exists in the water collection structure, and by electrical connection of the drainage apparatus with the main control apparatus 800, the main control apparatus controls the drainage apparatus to be in closed state. If the water level control component, such as the flow meter, is faulted, or the blocking apparatus 205 is faulted, the water will overflow, and when the detection apparatus 801 detects extremely high water level in the water collection structure, the drainage apparatus is controlled to be opened to drain the water in the water collection structure.

During the drainage and dewatering, the blocking apparatus 205 opens the second drainage port 204 to drain the water to the water collection structure, and the main control apparatus 800 controls the drainage apparatus to open to drain the water in the water collection cavity 400.

Or, when detecting extremely high liquid level in the water collection cavity 400 of the water collection structure, the detection apparatus transmits detection information to the main control apparatus 800, and the main control apparatus 800 controls the drainage apparatus to open to realize drainage.

During the drainage and dewatering, if the drainage apparatus is not opened, when the detection apparatus 801 detects the extremely high liquid level, the detection information is transmitted to the main control apparatus 800, and the main control apparatus 800 controls the drainage apparatus to open.

Further, the drainage apparatus includes a drainage pipe 401 communicating with the water collection structure. A control structure 802 for controlling the drainage pipe 401 to be connected/disconnected is arranged on the drainage pipe 401. The control structure 802 communicates with the drainage pipe 401. When the control structure 802 is turned on, the drainage pipe 401 is connected to drain the clothes washing water. When the control structure 802 is closed, the drainage pipe 401 is disconnected, and is unable to drain the washing water. The control structure 802 is electrically connected with the main control apparatus 800, and the main control apparatus 800 controls the control structure 802 to be turned on/off according to the water level, detected by the detection apparatus 801, in the water collection structure.

The control structure 802 is arranged on the drainage pipe 401, and is electrically connected with the main control apparatus 800, and the main control apparatus 800 controls the control structure 802 to be turned on/off according to the water level, detected by the detection apparatus, in the water collection structure to determine whether to drain the water in the water collection structure.

Most preferably, the drainage pipe 401 communicates with the bottom wall of the water collection cavity 400, so as to facilitate the drainage.

The control structure 802 may be of various types, and is explained by taking an electromagnetic valve and a drainage pump as an example.

Solution I: the control structure 802 is an electromagnetic valve electrically connected with the main control apparatus 800, and the main control apparatus 800 controls the electromagnetic valve to be turned on/off according to the water level, detected by the detection apparatus 801, in the water collection structure, thereby implementing the drainage pipe 401 to be connected/disconnected.

For example, in the water feeding state, since the blocking apparatus 205 blocks the second drainage port 204, there is basically no water in the water collection cavity 400, and the electromagnetic valve is turned off. In case of a fault, the water level in the water collection cavity 400 rises. When the water level is extremely high, the main control apparatus 800 controls the electromagnetic valve to be turned on to connect the drainage pipe 401 to drain the water in the water collection cavity 400.

The electromagnetic valve is preferably a normally-off electromagnetic valve. In a normal state, the electromagnetic valve is in an off state.

Further, the height of the drainage pipe 401 in a vertical direction is lower than the upper end of the water collection cavity 400. The best is that the height of the drainage pipe 401 in the vertical direction is lower than a communicating joint of the water collection cavity 400 and the drainage pipe 401. If the communicating joint is formed on the bottom wall of the water collection cavity 400, the drainage pipe 400 is preferably lower than the bottom wall of the water collection cavity 400.

The structure of this solution is very suitable for a washing machine for draining water in a down-draining manner.

Solution II: the control structure 802 is a drainage pump communicating with the drainage pipe 401. The drainage pump is electrically connected with the main control apparatus 800. The main control apparatus 800 controls the drainage pump to be turned on/off according to the water level in the water collection structure detected by the detection apparatus 801 for allowing the water in the water collection structure to be discharged or not be discharged.

When the water level in the water collection structure is extremely high, the main control apparatus 800 controls the drainage pump to be turned on to pump out the water in the water collection structure, so as to realize drainage. When the water level returns to a safety height, the main control apparatus 800 controls the drainage pump to be turned off, and then the water is no longer drained. The structure is very suitable for a washing machine for draining water in an up-draining manner.

Further, the detection apparatus 801 is a water level sensor or a pressure sensor arranged in the water collection structure. The water level in the water collection structure is detected by the water level sensor or the pressure sensor, thereby achieving high sensitivity. Most preferably, the water level sensor or the pressure sensor is arranged on the bottom wall of the water collection cavity.

Further, a water outlet of the drainage pipe 401 extends out of the washing machine.

The inner tub 200 includes a first drainage port 201 for drainage during spin-drying, and a first drainage pipeline 202 communicating with the first drainage port 201. A water outlet 203 of the first drainage pipeline 202 communicates with the water collection structure. During the spin-drying, the water reaches the first drainage ports 201 through the first drainage pipelines 202, then enters the water collection structure, and is drained out of the washing machine through the drainage pipe 401.

Further, a certain distance is reserved between the side wall of the water collection cavity 400 and the outer wall of the tub bottom of the inner tub 200.

By making the upper end of the side wall of the water collection cavity 400 lower than the tub bottom of the inner tub 200 and reserving a certain distance between the side wall of the water collection cavity 400 and the outer wall of the tub bottom of the inner tub 200, collision with the side wall of the water collection cavity 400 during vibration of a clothes washing tub 206 is prevented, thereby prolonging the service life of the water collection cavity 400.

The drainage control apparatus may not adopt the above electrical control mode, but a mechanical control mode. The drainage control apparatus includes a drainage pipe communicating with a water collection apparatus. A float adjusting valve is arranged at a joint of the drainage pipe and the water collection structure or in the drainage pipe. When the water level in the water collection structure reaches a certain height, the float adjusting valve opens, and the water in the water collection structure is drained out of the washing machine through the drainage pipe.

For example, a floating ball is arranged in the drainage pipe. A floating ball seat is arranged at the upper part of the floating ball, and a spring is arranged at the lower part of the floating ball. One end of the spring is fixedly connected with the floating ball, and the other end of the spring is fixedly connected with the inner wall of the drainage pipe. The spring is a pressure spring. Under the action of an elastic force of the pressure spring, the upper end of the floating ball hermetically abuts against the floating ball seat. When the water level in the water collection structure is greater than a certain height, the upper part of the floating ball counteracts the elastic force of the spring to move downwards under the action of water pressure, so that the floating ball is separated from the floating ball seat, and the water in the water collection structure is drained out. When the water level is decreased to a certain value, the floating ball moves upwards under the action of the elastic force, and hermetically abuts against the floating ball seat, and the water in the water collection structure is not drained out.

Embodiment II

As shown in FIGS. 1 to 3, the present embodiment is a further limitation to Embodiment I. In the present embodiment, the water collection structure includes a mounting plate 500 and a water retaining bar 501 arranged on the mounting plate 500. The mounting plate 500 and the water retaining bar 501 define a water collection cavity 400. By arranging the mounting plate 500 and the water retaining bar 501 and forming the water collection cavity 400 by the mounting plate 500 and the water retaining bar 501, the structure is simple and convenient to machine.

The water collection cavity 400 is located at the middle part of the mounting plate 500, so that the gravity center of a water retaining apparatus overlaps the center more easily, and an offset is reduced.

The water retaining bar 501 is of a ring shape, and the water retaining bar 501 and the mounting plate 500 define a annular water collection cavity 400.

Further, the water retaining bar 501 is inclined. By tilting the water retaining bar 501, the water retaining volume may be increased to the maximum extent, and the use is more convenient.

Further, the water retaining bar 501 gradually contracts from top to bottom towards a center axis direction of the water collection cavity 400, so that the upper opening has a larger aperture, which is more favorable for collection.

Further, the outer wall of the bottom of the inner tub 200 is an arc-shaped surface, and a certain distance is reserved between the water retaining bar 501 and the arc-shaped surface of the inner tub 200.

Further, a projection of the inner tub 200 in a horizontal direction covers a projection of the water collection cavity 400 in the horizontal direction. Since the projection of the inner tub 200 in the horizontal direction covers the projection of the water collection cavity 400 in the horizontal direction, the distance between the water collection cavity 400 and the case body 100 is prolonged, so as to prevent the collision of the water collection cavity 400 to the case body 100 and reduce damage to the water collection cavity 400. Meanwhile, the small water collection cavity 400 is more favorable for installation of other apparatuses at the bottom of the case body 100.

The projection of the inner tub 200 in the horizontal direction may also be less than the projection of the water collection cavity 400 in the horizontal direction, so that more water can be collected.

Further, the drainage pipe 401 is arranged on the mounting plate 500. One end of the drainage pipe 401 communicates with the water collection cavity 400, and the other end of the drainage pipe 401 is led out of the washing machine or communicates with a main drainage pipeline of the washing machine, so as to drain the water. Through the arrangement of the drainage pipe 401 for draining the water in the water collection structure in the water collection cavity 400, after the water is drained into the water collection cavity 400, the water in the water collection cavity 400 is drained out through the drainage pipe 401 to prevent overflow caused by excessive water in the water collection cavity 400.

Further, first drainage ports 201 and first drainage pipelines 202 communicating with the first drainage ports 201 are arranged on the tub wall of the inner tub 200. Water outlets 203 of the first drainage pipelines 202 are arranged above the upper opening of the water collection cavity 400. There are a plurality of first drainage ports 201 and a plurality of first drainage pipelines 202. Each first drainage port 201 corresponds to each first drainage pipeline 202, or the plurality of first drainage ports 201 correspond to one first drainage pipeline 202. When the washing machine is executing a spin-drying program, water thrown out by the centrifugal effect of the clothes washing tub 206 enters the first drainage pipelines 202 through the first drainage ports 201, and then is drained into the water collection cavity 400 through water outlets 203 of the first drainage pipelines 202, so as to be prevented from overflowing everywhere.

The water outlets 203 of the first drainage pipelines 202 are arranged above the upper opening of the water collection cavity 400. By making the water outlets 203 communicate with the water collection structure, during the spin-drying, the water enters the first drainage pipelines 202 through the first drainage ports 201, and then is drained into the water collection cavity 400 through the water outlets 203, so as to be prevented from overflowing. The water outlets 203 are arranged above the upper opening of the water collection cavity 400 defined by the water retaining bar 501, so that the water drained from the water outlets 203 directly falls into the water collection cavity 400. This structure is simpler, and is better in water collection effect without adding other additional components.

Further, the inner tub 200 further includes a second drainage port 204 for draining the water in the inner tub 200 into the water collection cavity 400 during dewatering and/or spin-drying. A blocking apparatus 205 is arranged between the second drainage port 204 and the water collection cavity 400. The blocking apparatus 205 opens the second drainage port 204 during the dewatering and/or spin-drying, so that a large amount of water in the inner tub 200 is drained out through the second drainage port 204. During clothes washing, the second drainage port 204 is blocked to retain the water in the inner tub 200 for clothes washing.

Further, the second drainage port 204 is arranged above the upper opening of the water collection cavity 400, and the blocking apparatus 205 is arranged at the lower part of the second drainage port 204.

Through the arrangement of the second drainage port 204, the blocking apparatus 205 opens the second drainage port 204 during the dewatering and/or spin-drying, so that the water in the inner tub 200 is directly drained into the water collection structure, and the water retaining bar 501 retains the water and prevents the water from overflowing, and the water is drained out of the washing machine through the drainage pipe 401. During clothes washing, the blocking apparatus 205 blocks the second drainage port 204 to retain the water in the inner tub 200 for clothes washing.

The washing machine is a pulsator washing machine.

The blocking apparatus 205 includes a valve plug 205-1 and an electromagnetic apparatus 205-2 arranged below the valve plug 205-1. The electromagnetic apparatus 205-2 is electrically connected with a control apparatus of the washing machine. When the washing machine is in a washing state, the valve plug 205-1 blocks the second drainage port 204 to prevent the water in the inner tub 200 from being drained. When the washing machine is in a drainage or dewatering state, the electromagnetic apparatus 205-2 controls the valve plug 205-1 to move downwards to open the second drainage port 204 to drain the water into the water collection structure.

A locating apparatus is arranged on the mounting plate 500. A matching portion cooperated with the locating apparatus is arranged on the bottom wall of the inner tub 200. The matching portion may be a locating groove. During the dewatering and/or spin-drying, the locating apparatus is separated from the matching portion, and the inner tub 200 rotates with an output shaft 303. When the washing machine is in the washing state, the locating apparatus is matched with the matching portion to lock the inner tub 200 on the mounting plate 500, and the valve plug 205-1 is just opposite to the second drainage port 204 to block the second drainage port 204, so as to prevent the water in the inner tub 200 from being drained out. The output shaft drives the pulsator in the washing machine to rotate.

Further, the mounting plate 500 is arranged between the inner tub 200 and a driving apparatus 300, and the lower part of the mounting plate 500 is fixedly connected with a shell of the driving apparatus 300. Through the arrangement of the mounting plate 500 between the inner tub 200 and the driving apparatus 300, on one hand, the water in the inner tub 200 may drop down by the self-weight and automatically flow into the water collection structure, and on the other hand, the mounting plate 500 is arranged at the upper part of the driving apparatus 300 to isolate the water from the driving apparatus 300, thus preventing the water from damaging the driving apparatus 300.

The driving apparatus 300 includes a motor 301. A decelerating clutch apparatus 302 is arranged above the motor 301. The lower part of the mounting plate 500 is fixedly connected with a shell of the decelerating clutch apparatus or the motor 301.

A connection mode between the mounting plate 500 and the driving apparatus 300 may also be that: the mounting plate 500 is connected with the output shaft 303 of the driving apparatus 300 through a bearing.

Further, the output shaft 303 of a decelerating clutch penetrates through the mounting plate 500, and is connected with the inner tub 200 to drive the inner tub 200 to rotate. The mounting plate 500 is connected with the output shaft 303 of the driving apparatus 300 through the bearing.

Embodiment III

As shown in FIGS. 1 to 2, a suspension type volume enlargement washing machine includes a case body 100, a clothes washing tub 206 arranged in the case body 100, and a driving apparatus 300. An output shaft 303 of the driving apparatus 300 is connected with the clothes washing tub 206 to drive the clothes washing tub 206 to rotate. The washing machine further includes suspended vibration absorption members 600 and a mounting piece 700 arranged below the clothes washing tub 206. The driving apparatus 300 is mounted on the mounting piece 700. One ends of the suspended vibration absorption members 600 are connected with the case body 100, and the other ends of the suspended vibration absorption members 600 are connected with the mounting piece 700.

The mounting piece 700 is arranged below the clothes washing tub 206, and the suspended vibration absorption members 600 are mounted on the mounting piece 700. Since the mounting piece 700 is lower than the clothes washing tub 206, longitudinal heights of mounting portions 701 are lowered, and an inclination angle θ between each mounted suspended vibration absorption member 600 and the side wall of the case body is reduced, and then space occupied by the suspended vibration absorption members 600 is reduced. When the structure is suspended between the clothes washing tub 206 and the case body 100, the diameter of the clothes washing tub 206 may be increased without enlarging the volume of the case body 100, thereby achieving the aim of volume enlargement.

The clothes washing tub 206 may be a clothes washing tub 206 only provided with an inner tub 200 that is used for accommodating water and washing clothes. The clothes washing tub 206 may also be a clothes washing tub 206 provided with an inner tub 200 and an outer tub.

Further, the mounting piece 700 includes the mounting portions 701 assembled with the suspended vibration absorption members 600, and the mounting portions 701 are not higher than the tub bottom of the clothes washing tub 206.

The mounting portions 701 are not higher than the tub bottom of the clothes washing tub 206, so as not to occupy the space between the clothes washing tub 206 and the case body 100, which may increase the diameter of the clothes washing tub 206 to achieve capacity enlargement.

Further, the mounting portions 701 are located below the tub bottom of the clothes washing tub 206. After the suspended vibration absorption members 600 are assembled with the mounting portions 701, since the mounting portions 701 are arranged to be lower than the tub bottom of the clothes washing tub 206, an inclination angle formed between each suspended vibration absorption member 600 and the case body 100 is decreased. That is, the suspended vibration absorption members 600 are better attached to the inner wall of the case body 100 to reserve larger space for the clothes washing tub 206, so that the aim of capacity enlargement may be achieved by increasing the diameter of the clothes washing tub 206.

Further, projections of the mounting portions 701 in a horizontal direction are located outside a projection of the clothes washing tub 206 in the horizontal direction.

Since the mounting portions 701 are arranged below the tub bottom of the clothes washing tub 206, and do not occupy the space between the clothes washing tub 206 and the case body 100, the mounting portions 701 would not collide with the clothes washing tub 206. In this premise, the mounting portions 701 are enabled to extend out of the tub wall of the clothes washing tub 206 in the horizontal direction to enable the projections of the mounting portion 701 in the horizontal direction to be located outside the projection of the clothes washing tub 206 in the horizontal direction, which further decreases the mounting space of the suspended vibration absorption members 600 and then increases the mounting space of the clothes washing tub 206 to achieve the capacity enlargement of the clothes washing tub 206.

Further, the output shaft 303 penetrates through the mounting piece 700, and is connected with the clothes washing tub 206 to drive the clothes washing tub 206 to rotate. The mounting piece 700 is connected with the output shaft 303 through bearing.

The mounting piece 700 may also be fixedly connected with a shell of the driving apparatus 300 to make the mounting piece 700, the driving apparatus 300 and the clothes washing tub 206 form a relatively independent whole. The mounting piece 700 may also be simultaneously fixedly connected with the shell of the driving apparatus 300 and connected with the output shaft 303 through a bearing to make the mounting piece 700, the driving apparatus 300 and the clothes washing tub 206 form a relatively independent whole.

The mounting piece 700 is connected with the output shaft 303 through the bearing and/or is fixedly connected with the shell of the driving apparatus 300 to make the mounting piece 700, the driving apparatus 300 and the clothes washing tub 206 form the relatively independent whole, so that the vibration of the mounting piece 700 is reduced through the vibration absorption member to reduce the vibrations of the clothes washing tub 206 and the driving apparatus 300, thus achieving a good vibration absorption effect.

The mounting piece 700 is of a centrosymmetric structure. There are a plurality of suspended vibration absorption members 600 uniformly distributed around the mounting piece 700.

By setting the mounting plate 500 to be a centrosymmetric structure, the possibility of deviation of the entire gravity center of the mounting plate 500, the clothes washing tub 206 and the motor 301 is lowered, thus achieving a better vibration absorption effect. The round mounting plate 500, on one hand, is favorable for mounting the driving apparatus 300, and on the other hand, makes the structure steadier.

Embodiment IV

As shown in FIGS. 1 to 2, the present embodiment is a further limitation to Embodiment III. In the present embodiment, the mounting piece 700 is a flat round mounting plate 500. The diameter of the mounting plate 500 is greater than the diameter of the clothes washing tub 206. The mounting plate 500 is arranged below the clothes washing tub 206. The lower ends of the suspended vibration absorption members 600 are assembled on the edge of the mounting plate 500 such that portions, connected with the mounting plate 500, of the suspended vibration absorption members 600 are located below the clothes washing tub 206 and outside the circumference of the clothes washing tub 206. That is, the mounting portions 701 are located obliquely below the tub bottom of the clothes washing tub 206 to reduce the suspension space of the suspended vibration absorption members 600, and then increase the space reserved for the clothes washing tub 206 without enlarging the volume of the case body 100.

The driving apparatus 300 is assembled at the lower part of the mounting plate 500. The output shaft 303 of the driving apparatus 300 penetrates through the mounting plate 500, and is connected with the mounting plate 500 through bearing.

There are four suspended vibration absorption members 600 uniformly distributed around the round mounting plate 500.

The vibration absorption members include suspenders 602 and vibration absorption units 601 for generating a damping force. One ends of the suspenders 602 are fixed at the upper part of the case body 100, and the other ends of the suspenders 602 penetrate through the mounting portions 701 and are connected with the vibration absorption units 601.

The vibration absorption units 601 are located below the mounting plate 500, so that the vibration absorption units 601 do not occupy the space between the case body 100 and the clothes washing tub 206 in the horizontal direction, which further reduces the limitation of the vibration absorption units 601 to the volume enlargement of the clothes washing tub 206.

The mounting mode of the vibration absorption members on the case body 100 and the mounting plate 500 may also be that: a mounting seat is arranged at the upper part of the case body 100. One ends of the suspenders 602 are connected with the mounting piece 700, and the other ends of the suspenders 602 penetrate through the mounting seat and are connected with the vibration absorption units 601.

The mounting piece 700 may also be a crossed mounting plate 500. The suspended vibration absorption members 600 are respectively connected with the edges of various branches of the crossed mounting plate 500. The mounting portions 701 for connecting the suspended vibration absorption members 600 with the crossed mounting plate 500 are lower than the tub bottom of the clothes washing tub 206, so that the suspended vibration absorption members 600 do not occupy the space between the clothes washing tub 206 and the case body 100, and the mounting portions 701 are lowered to reduce the mounting space of the suspended vibration absorption members 600 and achieve the volume enlargement of the clothes washing tub 206.

The mounting plate 500 may be a flat plate, or may be of a structure having a higher middle part and a lower edge, including, for example, a ring-like edge plate, a round center plate and a connection vertical plate for connecting the edge plate with the center plate. The cross section is of an “a” shape.

The mounting plate 500 may also be fixedly connected with a housing of the driving apparatus 300. Of course, the mounting plate 500 may also be simultaneously connected with the housing and the output shaft 303 through bearings.

Embodiment V

As shown in FIGS. 1 to 3, on the basis of Embodiment III and Embodiment IV, in the present embodiment, a vibration absorption apparatus includes a motor 301. A decelerating clutch is arranged on the motor. An output shaft 303 of the decelerating clutch is connected with the clothes washing tub 206 to drive the clothes washing tub 206 to rotate. The vibration absorption apparatus further includes first vibration absorption members 703. One ends of the first vibration absorption members 703 are movably connected with the mounting piece 700, and the other ends of the first vibration absorption members 703 are movably connected with the bottom of the case body 100. The first vibration absorption members 703 apply a downward pull force to the mounting piece 700, so that the mounting piece 700 is stressed by the downward pull force of the first vibration absorption members 703 and an upward pull force of the suspended vibration absorption members 600. Through a resultant force of the two forces, a better vibration absorption effect is achieved.

The mounting piece 700 is a round flat mounting plate 500. The suspended vibration absorption members 600 are connected with the upper part of the mounting plate 500, and the first vibration absorption members 703 are connected with the lower part of the mounting plate 500, so that the suspended vibration absorption members 600 and the first vibration absorption members 703 act on the mounting plate 500 at the same time to play a vibration absorption role on the mounting plate 500 and then achieve a vibration absorption effect on the clothes washing tub 206 and the motor 301.

In another solution of the mounting piece 700, the mounting piece 700 includes a big mounting plate 700-1 connected with the suspended vibration absorption members 600 and a small mounting plate 700-2 connected with the first vibration absorption members 703. The big mounting plate 700-1 and the small mounting plate 700-2 are connected through reinforcing bars to enhance the strength of the mounting piece. The reinforcing bars are spaced, so that the enhancement effect is better. Since the bottom wall of the case body 100 of the washing machine needs to be provided with reinforcing structure and other components, the diameter of the big mounting plate 700-1 is generally designed to be greater than the diameter of the small mounting plate 700-2 to provide space for the installation of other components. The separate arrangement saves more space below the mounting piece 700 and is more favorable for use.

Further, one ends of the first vibration absorption members 703 are hinged with the mounting piece 700, and the other ends of the first vibration absorption members 703 are hinged with the bottom of the case body 100.

Further, each first vibration absorption member 703 is a vibration absorber.

Further, the washing machine further includes second vibration absorption members 704 arranged on the driving apparatus 300. One ends of the second vibration absorption members 704 are fixedly connected with the driving apparatus 300, and the other ends of the second vibration absorption members 704 are fixedly connected to the bottom wall of the case body 100.

The second vibration absorption members 704 are arranged to apply a downward pull force or an upward elastic force to the driving apparatus 300. In combination with the first vibration absorption members 703 and the suspended vibration absorption members 600, the whole formed by the mounting plate 500, the driving apparatus 300 and the clothes washing tub 206 achieves a better vibration absorption effect under the combined action of the single components.

Further, one ends of the second vibration absorption members 704 are fixedly connected with a stator of the motor 301, and the other ends of the second vibration absorption members 704 are fixedly connected to the bottom wall of the case body 100.

Further, each second vibration absorption apparatus is a vibration absorption spring.

Further, the washing machine is also provided with a water collection structure, and the water collection structure is used for preventing water drained from the inner tub 200 from overflowing. The water collection structure is integrally located below the tub bottom of the inner tub 200. The water collection structure includes a water collection cavity 400 having an upper opening. The upper end of the side wall of the water collection cavity 400 is lower than the tub bottom of the inner tub 200. The inner tub 200 communicates with the upper opening of the water collection cavity 400.

Specifically, a water retaining bar 501 is arranged on the mounting plate 500. The mounting plate 500 and the water retaining bar 501 form the water collection cavity 400. By arranging the mounting plate 500 and the water retaining bar 501 and forming the water collection cavity 400 by the mounting plate 500 and the water retaining bar 501, the structure is simple and convenient to machine.

The water collection cavity 400 is located at the middle part of the mounting plate 500, so that the gravity center of a water retaining apparatus overlaps the center more easily, and an offset is reduced.

The water retaining bar 501 is in a ring shape, and the water retaining bar 501 and the mounting plate 500 define a ring-like water collection cavity 400.

Further, the water retaining bar 501 is inclined. By tilting the water retaining bar 501, the water retaining capacity may be increased to the maximum extent, and the use is more convenient.

Further, the water retaining bar 501 gradually contracts from top to bottom towards a center axis direction of the water collection cavity 400, so that the upper opening has a larger aperture, which is more favorable for collection.

Further, the outer wall of the bottom of the inner tub 200 is an arc-shaped surface, and a certain distance is reserved between the water retaining bar 501 and the arc-shaped surface of the inner tub 200.

Further, a projection of the inner tub 200 in a horizontal direction covers a projection of the water collection cavity 400 in the horizontal direction. Since the projection of the inner tub 200 in the horizontal direction covers the projection of the water collection cavity 400 in the horizontal direction, the distance between the water collection cavity 400 and the case body 100 is prolonged, so as to prevent the collision of the water collection cavity 400 to the case body 100 and reduce damage to the water collection cavity 400. Meanwhile, the small water collection cavity 400 is more favorable for installation of other apparatuses at the bottom of the case body 100.

The projection of the inner tub 200 in the horizontal direction may also be less than the projection of the water collection cavity 400 in the horizontal direction, so that more water can be collected.

Further, the drainage pipe 401 is arranged on the mounting plate 500. One end of the drainage pipe 401 is communicated with the water collection cavity 400, and the other end of the drainage pipe 401 is led out of the washing machine or communicates with a main drainage pipeline of the washing machine, so as to drain the water. Through the arrangement of the drainage pipe 401 for draining the water in the water collection structure in the water collection cavity 400, after the water is drained into the water collection cavity 400, the water in the water collection cavity 400 is drained out through the drainage pipe 401 to prevent overflow caused by excessive water in the water collection cavity 400.

Further, first drainage ports 201 and first drainage pipelines 202 communicating with the first drainage ports 201 are arranged on the tub wall of the inner tub 200. Water outlets 203 of the first drainage pipelines 202 are arranged above the upper opening of the water collection cavity 400. There are a plurality of first drainage ports 201 and a plurality of first drainage pipelines 202. Each first drainage port 201 corresponds to each first drainage pipeline 202, or the plurality of first drainage ports 201 correspond to one first drainage pipeline 202. When the washing machine is executing a spin-drying program, water thrown out by the centrifugal effect of the clothes washing tub 206 enters the first drainage pipelines 202 through the first drainage ports 201, and then is drained into the water collection cavity 400 through water outlets 203 of the first drainage pipelines 202, so as to be prevented from overflowing everywhere.

The water outlets 203 of the first drainage pipelines 202 are arranged above the upper opening of the water collection cavity 400. By enabling the water outlets 203 to communicate with the water collection structure, during the spin-drying, the water enters the first drainage pipelines 202 through the first drainage ports 201, and then is drained into the water collection cavity 400 through the water outlets 203, so as to be prevented from overflowing. The water outlets 203 are arranged above the upper opening of the water collection cavity 400 defined by the water retaining bar 501, so that the water drained from the water outlets 203 directly falls into the water collection cavity 400. This structure is simpler, and is better in water collection effect without adding other additional components.

Further, the inner tub 200 further includes a second drainage port 204 for draining the water in the inner tub 200 into the water collection cavity 400 during dewatering and/or spin-drying. A blocking apparatus 205 is arranged between the second drainage port 204 and the water collection cavity 400. The blocking apparatus 205 opens the second drainage port 204 during the dewatering and/or spin-drying, so that a large amount of water in the inner tub 200 is drained out through the second drainage port 204. During clothes washing, the second drainage port 204 is blocked to retain the water in the inner tub 200 for clothes washing.

Further, the second drainage port 204 is arranged above the upper opening of the water collection cavity 400, and the blocking apparatus 205 is arranged at the lower part of the second drainage port 204.

Through the arrangement of the second drainage port 204, the blocking apparatus 205 opens the second drainage port 204 during the dewatering and/or spin-drying, so that the water in the inner tub 200 is directly drained into the water collection structure, and the water retaining bar 501 retains the water and prevents it from overflowing, and the water is drained out of the washing machine through the drainage pipe 401. During clothes washing, the blocking apparatus 205 blocks the second drainage port 204 to retain the water in the inner tub 200 for clothes washing.

The washing machine is a pulsator washing machine.

The blocking apparatus 205 includes a valve plug 205-1 and an electromagnetic apparatus 205-2 arranged below the valve plug 205-1. The electromagnetic apparatus 205-2 is electrically connected with a control apparatus of the washing machine. When the washing machine is in a washing state, the valve plug 205-1 blocks the second drainage port 204 to prevent the water in the inner tub 200 from being drained. When the washing machine is in a drainage or dewatering state, the electromagnetic apparatus 205-2 controls the valve plug 205-1 to move downwards to open the second drainage port 204 to drain the water into the water collection structure.

A locating apparatus is arranged on the mounting plate 500. A matching portion matched with the locating apparatus is arranged on the bottom wall of the inner tub 200. The matching portion may be a locating groove. During the dewatering and/or spin-drying, the locating apparatus is separated from the matching portion, and the inner tub 200 rotates with an output shaft 303. When the washing machine is in the washing state, the locating apparatus is matched with the matching portion to lock the inner tub 200 on the mounting plate 500, and the valve plug 205-1 is just opposite to the second drainage port 204 to block the second drainage port 204, so as to prevent the water in the inner tub 200 from being drained out. The output shaft drives the pulsator in the washing machine to rotate.

Further, the mounting plate 500 is arranged between the inner tub 200 and a driving apparatus 300, and the lower part of the mounting plate 500 is fixedly connected with a shell of the driving apparatus 300. Through the arrangement of the mounting plate 500 between the inner tub 200 and the driving apparatus 300, on one hand, the water in the inner tub 200 may drop down by its gravity and automatically flow into the water collection structure, and on the other hand, the mounting plate 500 is arranged at the upper part of the driving apparatus 300 to isolate the water from the driving apparatus 300, thus preventing the water from damaging the driving apparatus 300.

The driving apparatus 300 includes a motor 301. A decelerating clutch apparatus 302 is arranged above the motor 301. The lower part of the mounting plate 500 is fixedly connected with a shell of the decelerating clutch apparatus or the motor 301.

A connection mode between the mounting plate 500 and the driving apparatus 300 may also be that: the mounting plate 500 is connected with the output shaft 303 of the driving apparatus 300 through a bearing.

Further, the output shaft 303 of the decelerating clutch penetrates through the mounting plate 500, and is connected with the inner tub 200 to drive the inner tub 200 to rotate. The mounting plate 500 is connected with the output shaft 303 of the driving apparatus 300 through the bearing.

Embodiment VI

A control method of the washing machines of Embodiment I to Embodiment V is provided. A detection apparatus 801 detects a water level in a water collection structure, and transmits detection information to a main control apparatus 800. The main control apparatus 800 controls a drainage apparatus to be opened/closed according to a detection result of the detection apparatus 801.

Further, as shown in FIG. 4, a method of a washing machine includes the following steps that:

presetting a water level height H1 in the main control apparatus 800;

the detection apparatus 801 detects a water level height H2 in the water collection structure, and transmits a detection signal to the main control apparatus 800; and

the main control apparatus 800 determines whether H2 is greater than H1; if H2 is greater than H1, the main control apparatus 800 controls the drainage apparatus to be opening to drain water in the water collection structure; and if H2 is not greater than H1, the main control apparatus 800 controls the drainage apparatus to be in closed state, and the water may not be drained out.

A drainage pump is taken as an example for illustration below.

A method of a washing machine includes the following steps that:

S1, the main control apparatus 800 presets a water level height in the water collection structure to be 0 when the washing machine is in a washing program, and presets a water level height in the water collection structure to be a % of the height of the side wall of a water collection cavity when the washing machine is in a dewatering program;

S2, the main detection apparatus 801 detects a water level height H2 in the water collection cavity, and transmits a detection signal to the main control apparatus 800;

S3, the main control apparatus 800 determines whether the washing machine is in the washing program, or the dewatering program; if it is in the washing program, S4 is continued; and if it is in the dewatering program, S5 is continued;

S4, the main control apparatus 800 determines whether H2 is more than 0; if H2 is more than 0, the main control apparatus 800 controls the drainage pump to be turned on, and the drainage pump pumps out the water in the water collection cavity; and if H2 is less than or equal to 0, the main control apparatus 800 controls the drainage pump to be turned off to not drain water;

S5, the main control apparatus 800 determines whether H2 is greater than a % of the height of the side wall of the water collection cavity; if H2 is greater than a % of the height of the side wall of the water collection cavity, the main control apparatus 800 controls the drainage pump to be turned on, and the drainage pump pumps out the water in the water collection cavity; and if H2 is less than or equal to the a % of the height of the side wall of the water collection cavity, the main control apparatus 800 controls the drainage pump to be turned off to not drain water.

The a % may be 70 percent to 80 percent, but is not limited thereto.

The above descriptions are only preferred embodiments of the present disclosure, but not intended to limit the present disclosure in any forms. Although the present disclosure is disclosed above by the preferred embodiments, the preferred embodiments are not intended to limit the present disclosure. Any person skilled in the art can make some changes by using the above-mentioned technical contents or modify the technical contents as equivalent embodiments of equivalent changes without departing from the scope of the technical solution of the present disclosure. Any simple alterations, equivalent changes and modifications that are made to the above embodiments according to the technical essence of the present disclosure without departing from the contents of the technical solution of the present disclosure shall all fall within the scope of the solution of the present disclosure. 

1. A washing machine, comprising an inner tub for accommodating water, a water collection structure for collecting water drained from the inner tub, and a drainage control apparatus communicating with the water collection structure; and the drainage control apparatus controlling drainage according to a water level in the water collection structure.
 2. The washing machine according to claim 1, wherein the drainage control apparatus comprises a main control apparatus, a detection apparatus for detecting the water level in the water collection structure, and a drainage apparatus for draining the water in the water collection structure; the water collection structure is located below a tub bottom of the inner tub; and the detection apparatus and the drainage apparatus are both electrically connected with the main control apparatus.
 3. The washing machine according to claim 2, wherein the water collection structure comprises a water collection cavity having an upper opening; an upper end of a side wall of the water collection cavity is lower than the tub bottom of the inner tub; the inner tub is communicated with the upper opening of the water collection cavity; and the detection apparatus is arranged in the water collection cavity.
 4. The washing machine according to claim 3, wherein the water collection structure comprises a mounting plate and a water retaining bar arranged on the mounting plate; the mounting plate and the water retaining bar form the water collection cavity; the detection apparatus is arranged on an upper side of the mounting plate.
 5. The washing machine according to claim 2, wherein the drainage apparatus comprises a drainage pipe communicating with the water collection structure; a control structure for controlling the drainage pipe to be connected/disconnected is arranged on the drainage pipe; the control structure is communicated with the drainage pipe, and is electrically connected with the main control apparatus; the main control apparatus controls the control structure to be turned on/off according to the water level in the water collection structure detected by the detection apparatus.
 6. The washing machine according to claim 5, wherein the control structure is an electromagnetic valve electrically connected with the main control apparatus; and the main control apparatus controls the electromagnetic valve to be turned on/off according to the water level in the water collection structure detected by the detection apparatus for allowing the drainage pipe to be connected/disconnected.
 7. The washing machine according to claim 5, wherein the control structure is a drainage pump communicating with the drainage pipe; the drainage pump is electrically connected with the main control apparatus; and the main control apparatus controls the drainage pump to be turned on/off according to the water level in the water collection structure detected by the detection apparatus.
 8. The washing machine according to claim 2, wherein the detection apparatus is a water level sensor or a pressure sensor arranged in the water collection structure.
 9. A control method of the washing machine according to claim 1, comprising the following steps: presetting a water level height H1 in a main control apparatus; a detection apparatus detecting a water level height H2 in the water collection structure, and transmitting a detection signal to the main control apparatus; the main control apparatus determining whether H2 is greater than H1; if H2 is greater than H1, the main control apparatus controlling a drainage apparatus to open, to drain water in the water collection structure; if H2 is not greater than H1, the main control apparatus controlling the drainage apparatus to be in a closed state.
 10. The washing machine according to claim 1, wherein the drainage control apparatus comprises a drainage pipe communicating with a water collection structure; a float adjusting valve is arranged in the water collection structure or the drainage pipe; and when a water level in the water collection structure reaches a certain height, the float adjusting valve is open, and the water in the water collection structure is drained out of the washing machine through the drainage pipe.
 11. The washing machine according to claim 4, wherein the detection apparatus is detachably connected with the mounting plate.
 12. The washing machine according to claim 3, wherein the drainage apparatus comprises a drainage pipe communicating with the water collection structure; a control structure for controlling the drainage pipe to be connected/disconnected is arranged on the drainage pipe; the control structure is communicated with the drainage pipe, and is electrically connected with the main control apparatus; the main control apparatus controls the control structure to be turned on/off according to the water level in the water collection structure detected by the detection apparatus.
 13. The washing machine according to claim 4, wherein the drainage apparatus comprises a drainage pipe communicating with the water collection structure; a control structure for controlling the drainage pipe to be connected/disconnected is arranged on the drainage pipe; the control structure is communicated with the drainage pipe, and is electrically connected with the main control apparatus; the main control apparatus controls the control structure to be turned on/off according to the water level in the water collection structure detected by the detection apparatus. 